Toggle connection



J. J. CASSIDY.

TOGGLE CONNECTION. APPLICATION H-LED NQV. 21. 1918.

1 ,338, 7 1 Patented Apr. 27, 1920;

JOHN J. CASSIDY, or CLEVELAND, OHIO.

TOGGLE CONNECTION.

Specification of Letters Patent.

Patented Apr. 27, 1920.

Application filed November 21, 1918. Serial No. 263,482.

To all whom it may concern: 7

Be it known that I, JOHN J. CAssIDY, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga'and State of Ohio, have invented certain new and useful Improvements in Toggle Connections, of which the following is a specification.

This invention represents a new and origi nal construction in what I prefer to call a toggle connection especially designed for pneumatic tools, but not limited to such tools, as will hereinafter more fully appear, and wherein the construction of the toggle members as adapted to a crank connection constitutes the invention and provides a strong, durable, and separable crank connection.

In the accompanying drawings, Figure 1 is a sectional elevation of two cylinders and pistons and a crank shaft andmy improved toggle connection in working relation therewith. Fig. 2 is a sectional view taken on line 2-2, Fig. 1, the line being deviated at the crank to bring in the connections of the inner rod. Fig. 3 is a perspective of the outer toggle member; Fig. 4 is a perspective view of the bushing for both toggle members; Fig. 5 is a perspective view of the inner toggle member, and Fig. 6 a perspective view of the cap bearing therefor.

The cylinders C are of the conventional or standard type, shown at right angles to each other and so also are the pistons P therein. The angular relation of the cylinders may vary from the showing, which is only representative of the use of the toggle members. The pistons are also shown as being provided with sockets for the balls on the connecting rods, as usual, but any other practical connection may be used at this point, and any suitable form of rod may be employed for the toggle members 2 and 4, which in the main embody the invention. These members 2 and 4, are clearly shown separately in Figs. 3 and 5, and in their assembled relations in Fig. 1. As thus shown the said members are differentiated from all other toggle connections or members familiar to me by their essentially original yoke construction.v Thus, the outer toggle rod member 2 comprises a yoke portion which is preferably offset at a decided angle to the axis of the toggle rod 2', say approximately thirty to forty-five degrees, and which yoke The inner toggle member 4 is likewise an 7 open yoke-shaped angularly disposed portion with two parallel straight sidesG-terminating at their base in the rounded bearing surface 7, and adapted to enter between the side projections 5 of the outer toggle member 2 and to engage over and rest upon the middle portion 8 of the bushing B, while the double yoke portions of the outer toggle member rest or bear on the somewhat enlarged end portions 9 of the bushing, thus giving a side or shouldered bearing to the inner yoke member 4 on the bushing.

It will be noticed, also, that the bushing B is split longitudinally in two' equal sections or halves, and that while the bearing portion therein for the crank 14 of the shaft S is continuous the ends thereof have such depth or extension at 13 as to accommodate transverse holes 10 adapted to receive the locking bolts 12, which pass through corresponding holes in the projections 5 and whereby the outer yoke member and the said bushing are locked together and confined upon the crank 14. The yoke of the inner toggle member 4 is provided with a bearing member or cap 16 adapted to be clamped between the sides 6 thereof on the bushing by means of a bolt 17 through the same, as seen in Fig. 1, and corresponding substantially to the bolts 12 and which completes the working engagement of said parts. said cap 16, however, bears against the rounded outside of the bushing between the ends 13 thereof and not upon the crank.

Now, having the parts constructed and connected up as shown and described, it will be noticed, first, that each toggle unit is an entirety or one piece member, and that the yoke by which each toggle is engaged with the bushing on the crank 14 is at an angle to the body thereof as described. This construction brings with it the important advantage of relating the parts to the crank axle in such manner that the bolts which secure the toggles upon the crank and bushing are exposed for convenient removal and replacing in certain positions of the crank, as inFig. 1, and which is not possible by any The construction or relation of straight connecting rods in similar organizations, with which I am familiar. c

It Will of course be observed that the fiat inner sides of the projections 5 and 6 of the yokes match corresponding fiat outer sides at the ends of thebushing B and of the bear ing cap 16, respectively. If desired, I may make the yoke member and the connecting rod in two parts instead of integral as shown, and may use a different angular relation of the connecting rod to the yoke member from that shown, especially where the 7 cylinders are related differently.

What I claim is:

1. A toggle connection for cranks comprising a set of oppositely projected piston rods having each a ball at one end and an open yoke at the other end, said yokes having rounded bearings in their base and fiat sides projecting from said bearings at an inclination to the axis of therod and provided with transverse bolt holes in their outer portions, and separate bearing members bolted between the sides of said rods.

2. A toggleconnection comprising a split bushing having flat sided projections oppositely at its ends and holes transversely through said projections, a rod havingv a yoke with holes through the sides thereof and bolts through said holes locking said yoke and bushing together, and a second rod opposite the first named rod having a yoke engaged overthe middle of said bushing and a cap secured between the lugs thereof and bearing on said bushing.

3. In toggle link connections, a pair of oppositely disposed piston rods having yokes with rounded bearings and. straight sides at an angle of approximately forty degreesto the projection of said rods, a bushing en- JOHN J; GASSIDY. 

